20. (1) The Cork local authorities may, after consultation with the oversight committee and before the transfer day, jointly make an arrangement in accordance with this section.

(2) An arrangement under this section may make provision for—

(a) the performance by the county council on behalf of the city council of such functions of the city council as are specified in the arrangement in respect of the relevant area or any part thereof,

(b) the joint performance by the city council and county council of such functions of the city council as are specified in the arrangement in respect of the relevant area or any part thereof,

(c) such other arrangements in relation to the performance of such functions of the city council as are specified in the arrangement in respect of the relevant area or any part thereof, as the Cork local authorities consider appropriate.

(3) An arrangement under this section shall—

(a) specify the period in respect of which the arrangement shall apply,

(b) be in accordance with the implementation plan, and

(c) have regard to any guidelines or recommendations of the oversight committee.

(4) Any agreement made by the city council and the county council under section 85 of the Principal Act and operative immediately before the transfer day shall, subject to any arrangement under this section, continue to be operative on and after that day in accordance with its terms.

(5) An arrangement under this section may amend the terms of an agreement referred to in subsection (4).

(6) The Cork local authorities may, after consultation with the oversight committee, amend or revoke an arrangement under this section.

(7) An arrangement or amending arrangement under this section shall be carried out by the Cork local authorities in accordance with its terms.

(8) Any dispute arising in relation to an arrangement under this section shall be referred for determination to the oversight committee and the determination of the oversight committee shall be final.

(9) The functions of the city council in relation to the relevant area shall, in addition to being performable by the city council, be performable by the county council, or by the city council and the county council jointly, in accordance with an arrangement under this section.